EP3706145A1 - High voltage feed-through with temperature detection and transformer device with the high voltage feed-through - Google Patents

High voltage feed-through with temperature detection and transformer device with the high voltage feed-through Download PDF

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Publication number
EP3706145A1
EP3706145A1 EP19160763.9A EP19160763A EP3706145A1 EP 3706145 A1 EP3706145 A1 EP 3706145A1 EP 19160763 A EP19160763 A EP 19160763A EP 3706145 A1 EP3706145 A1 EP 3706145A1
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EP
European Patent Office
Prior art keywords
voltage bushing
optical waveguide
transformer
inner conductor
voltage
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Granted
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EP19160763.9A
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German (de)
French (fr)
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EP3706145B1 (en
Inventor
Friedemann KLEINFELD
Achim Langens
Tim Schnitzler
Joachim Titze
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Siemens Energy Global GmbH and Co KG
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Siemens AG
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Priority to DK19160763.9T priority Critical patent/DK3706145T3/en
Priority to EP19160763.9A priority patent/EP3706145B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/005—Insulators structurally associated with built-in electrical equipment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/02—Casings
    • H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements

Definitions

  • the invention relates to a high-voltage bushing with an inner conductor passed through an insulating body, which extends between an open-air end and an oil-side end of the high-voltage bushing, and with an optical waveguide for measuring a temperature of the high-voltage bushing.
  • Such a high-voltage bushing is from the WO 2017/152985 A1 known.
  • the known high-voltage bushing is usually used to lead the inner conductor, which is at high-voltage potential, through a wall, which is at ground potential.
  • the wall or transformer tank wall forms a housing (tank) of a transformer.
  • the high-voltage device is usually part of a high-voltage installation with several high-voltage components such as transformers or switchgear. When the high-voltage device is in operation, a relatively high current flows through the inner conductor. With the known high-voltage bushing, this current can be measured by means of an optical waveguide. The optical waveguide is guided at least in sections on the inner conductor.
  • light signals are fed into the light waveguide and, after the light signals pass through the light waveguide, are decoupled from the light waveguide and evaluated.
  • the temperature can be determined spatially resolved using a temperature-dependent light scattering.
  • the optical waveguide is passed through a fastening flange of the high-voltage bushing to the outside.
  • a high-voltage bushing is understood here to mean a bushing that is designed to isolate a voltage of more than 1 kV.
  • the object of the invention is to propose a high-voltage bushing mentioned at the beginning which is as reliable and inexpensive as possible.
  • the object is achieved according to the invention in that the optical waveguide is led out of the high-voltage bushing at the oil-side end.
  • the optical waveguide by means of which a temperature of the high-voltage bushing can be measured, in particular an inner conductor temperature, is therefore not led out of the high-voltage bushing in the area of the fastening flange, but via the oil-side end of the high-voltage bushing.
  • the oil-side end denotes that of the two ends of the high-voltage bushing which is set up to be arranged in an oil-filled tank of a transformer device or a transformer.
  • the inner conductor at the oil-side end of the high-voltage bushing is suitably set up to be connected to a winding of the transformer.
  • the end of the high-voltage bushing on the open air side is expediently set up for connection to an overhead line.
  • An advantage of the present invention is that a transformer oil, which fills a space between the oil-side end and a tank wall of the transformer, provides good insulation between the high-voltage potential of the inner conductor and the ground potential of the tank wall, so that a simple connection of the optical waveguide with a Evaluation unit for evaluating the sensor data determined by means of the optical waveguide is enabled. There is no need for an additional lead-through for the insulated lead-through of the inner conductor from the lead-through.
  • the solution according to the invention offers a simplification of the structure, since there is more free space at the oil-side end in such a case than in the spatial vicinity of the electrical connections of the voltage divider connection on the mounting flange.
  • the optical waveguide is guided through a cavity in the inner conductor. This has particular advantages in the production of the high-voltage bushing, because the optical waveguide can be passed through the inner conductor in a simple manner.
  • the optical waveguide is guided between the inner conductor and the insulating body.
  • the inner conductor can for example be passed through a gap between the inner conductor and the insulating body.
  • the optical waveguide can also be guided through a cavity provided for this purpose in the inner conductor. It is of course conceivable that the optical waveguide is guided in sections through the cavity, between the inner conductor and the insulating body and / or also within the inner conductor. If the optical waveguide is guided between the insulating body and the inner conductor, it is advantageously already fixed locally in this way by the inner conductor and the insulating body without additional measures.
  • the optical waveguide preferably has a plug at one end leading out of the high-voltage bushing, which is used to connect to a connection line of a transformer or a connection device for forwarding of temperature measurement data is set up.
  • the optical waveguide can accordingly be connected in a simple manner to the connection line in the transformer or the connection device when the high-voltage bushing is installed, without any further installation measures.
  • the optical waveguide preferably has an excess length at one end that leads out of the high-voltage bushing.
  • the excess length can advantageously be used for a simple connection of the optical waveguide to the connection line or the connection device.
  • the excess length that is to say the length of the optical waveguide between the point where it is led out of the high-voltage bushing and its free end, can for example be between one and two meters.
  • the insulating body comprises an active part with electrically conductive control inserts which are arranged concentrically around the inner conductor and are separated from one another by insulating layers.
  • the insulating layers can for example comprise suitable paper or synthetic material which is impregnated with a resin.
  • the control inserts are used for field control and are suitably arranged concentrically around the inner conductor and spaced apart from one another by the insulating layers.
  • the active part is at least partially surrounded by a secondary insulation, the secondary insulation being gaseous, pasty or foam-like, the optical waveguide being guided at least in sections in the secondary insulation.
  • the invention also relates to a transformer device with a transformer winding.
  • the transformer device may suitably comprise several transformer windings housed in the same transformer tank.
  • the invention has the task of proposing such a transformer device which is as reliable and inexpensive as possible.
  • each transformer winding can preferably be connected to its own outdoor line by means of an associated high-voltage device according to the invention.
  • the transformer device comprises a sensor device which is arranged on a transformer tank wall and is connected to the optical waveguide.
  • the sensor device is suitably equipped with a connection device and set up to receive the light signals from the optical waveguide and to forward them to an evaluation unit.
  • the forwarding can be wired or wireless, depending on the configuration of the sensor device.
  • the sensor device is set up for temperature measurement or temperature detection by means of the optical waveguide.
  • the sensor device can itself generate the light signals for feeding into the optical waveguide.
  • the sensor device is suitably set up to convert the received light signals into electrical signals and, if necessary, to evaluate and / or forward or send to another receiving device.
  • a high-voltage bushing 1 is shown.
  • the high-voltage bushing 1 has an inner conductor 2 which extends between an open-air end 3 and an oil-side end 4 of the high-voltage bushing 1.
  • the oil-side end of the high-voltage bushing 1 is located in an oil tank 5 of a transformer device 17 with a tank wall 6, which is filled with an insulating oil.
  • the high-voltage bushing 1 also comprises an insulating body 7 through which the inner conductor 2 is passed.
  • the insulating body 7 comprises an active part 8 with concentric control inserts, a gas-filled secondary insulation 9, a housing 10 as well as insulator screens 11 and a fastening flange 12 for fastening the high-voltage bushing 1 to the boiler wall 6.
  • In the fastening flange 12 there is a voltage divider tap 13 for voltage measurement or capacitance measurement.
  • An optical waveguide 14 is guided in a cavity of the inner conductor 2 and is led out of the high-voltage bushing 1 at the oil-side end 4.
  • the optical waveguide 14 has an excess length 15 so that the optical waveguide 14 can be connected to a connection device 16 of the transformer device 17, which is a suitable sensor device can be.
  • the optical waveguide 14 is equipped with a suitable plug 18.
  • the high-voltage bushing 18 has a narrow gap 19 between the active part 8 and the inner conductor 2.
  • the optical waveguide 14 is guided through this gap 19 on the inner conductor 2 and is led out of the high-voltage bushing 1 at its oil-side end 4.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

Die Erfindung betrifft eine Hochspannungsdurchführung (1,18) mit einem durch einen Isolierkörper (7) hindurchgeführten Innenleiter (2), der sich zwischen einem freiluftseitigen Ende (3) und einem ölseitigen Ende (4) der Hochspannungsdurchführung erstreckt, sowie mit einem Lichtwellenleiter (14) zum Messen einer Temperatur der Hochspannungsdurchführung. Die Erfindung zeichnet sich dadurch aus, dass der Lichtwellenleiter am ölseitigen Ende (4) aus der Hochspannungsdurchführung herausgeführt ist. Die Erfindung betrifft ferner eine Transformatorvorrichtung (17) mit der Hochspannungsdurchführung.The invention relates to a high-voltage bushing (1,18) with an inner conductor (2) passed through an insulating body (7), which extends between an open-air end (3) and an oil-side end (4) of the high-voltage bushing, and with an optical waveguide (14) ) for measuring a temperature of the high-voltage bushing. The invention is characterized in that the optical waveguide is led out of the high-voltage bushing at the oil-side end (4). The invention also relates to a transformer device (17) with the high-voltage bushing.

Description

Die Erfindung betrifft eine Hochspannungsdurchführung mit einem durch einen Isolierkörper hindurchgeführten Innenleiter, der sich zwischen einem freiluftseitigen Ende und einem ölseitigen Ende der Hochspannungsdurchführung erstreckt, sowie mit einem Lichtwellenleiter zum Messen einer Temperatur der Hochspannungsdurchführung.The invention relates to a high-voltage bushing with an inner conductor passed through an insulating body, which extends between an open-air end and an oil-side end of the high-voltage bushing, and with an optical waveguide for measuring a temperature of the high-voltage bushing.

Eine solche Hochspannungsdurchführung ist aus der WO 2017/152985 A1 bekannt. Die bekannte Hochspannungsdurchführung wird üblicherweise dazu eingesetzt, den auf Hochspannungspotenzial liegenden Innenleiter durch eine auf Erdpotenzial liegende Wandung zu führen. Beispielsweise im Fall einer Transformatordurchführung bildet die Wandung bzw. Transformatorkesselwand ein Gehäuse (Kessel) eines Transformators. Üblicherweise ist die Hochspannungsvorrichtung Teil einer Hochspannungsanlage mit mehreren Hochspannungskomponenten wie Transformatoren oder Schaltanlagen. Im Betrieb der Hochspannungsvorrichtung ist der Innenleiter von einem relativ hohen Strom durchflossen. Dieser Strom kann bei der bekannten Hochspannungsdurchführung mittels eines Lichtwellenleiters gemessen werden. Der Lichtwellenleiter ist dabei zumindest abschnittsweise an dem Innenleiter geführt. Dazu werden in den Lichtwellenleiter Lichtsignale eingespeist und, nachdem die Lichtsignale den Lichtwellenleiter durchlaufen, aus dem Lichtwellenleiter ausgekoppelt und ausgewertet. Beispielsweise kann mittels eines in den Lichtwellenleiter eingespeisten Lichtsignals die Temperatur ortsaufgelöst unter Ausnutzung einer temperaturabhängigen Lichtstreuung bestimmt werden. Bei der bekannten Hochspannungsdurchführung ist der Lichtwellenleiter durch einen Befestigungsflansch der Hochspannungsdurchführung nach außen hindurchgeführt. Als Hochspannungsdurchführung wird hierbei eine Durchführung verstanden, die auf eine Isolierung einer Spannung von mehr als 1 kV ausgelegt ist.Such a high-voltage bushing is from the WO 2017/152985 A1 known. The known high-voltage bushing is usually used to lead the inner conductor, which is at high-voltage potential, through a wall, which is at ground potential. For example, in the case of a transformer bushing, the wall or transformer tank wall forms a housing (tank) of a transformer. The high-voltage device is usually part of a high-voltage installation with several high-voltage components such as transformers or switchgear. When the high-voltage device is in operation, a relatively high current flows through the inner conductor. With the known high-voltage bushing, this current can be measured by means of an optical waveguide. The optical waveguide is guided at least in sections on the inner conductor. For this purpose, light signals are fed into the light waveguide and, after the light signals pass through the light waveguide, are decoupled from the light waveguide and evaluated. For example, by means of a light signal fed into the optical waveguide, the temperature can be determined spatially resolved using a temperature-dependent light scattering. In the known high-voltage bushing, the optical waveguide is passed through a fastening flange of the high-voltage bushing to the outside. A high-voltage bushing is understood here to mean a bushing that is designed to isolate a voltage of more than 1 kV.

Die Aufgabe der Erfindung ist es, eine eingangs genannte Hochspannungsdurchführung vorzuschlagen, die möglichst zuverlässig und kostengünstig ist.The object of the invention is to propose a high-voltage bushing mentioned at the beginning which is as reliable and inexpensive as possible.

Die Aufgabe wird bei einer artgemäßen Hochspannungsdurchführung erfindungsgemäß dadurch gelöst, dass der Lichtwellenleiter am ölseitigen Ende aus der Hochspannungsdurchführung herausgeführt ist. Der Lichtwellenleiter, mittels dessen eine Temperatur der Hochspannungsdurchführung gemessen werden kann, insbesondere eine Innenleitertemperatur, wird demnach nicht im Bereich des Befestigungsflansches, sondern über das ölseitige Ende der Hochspannungsdurchführung aus der Hochspannungsdurchführung herausgeführt. Als ölseitiges Ende wird dasjenige der beiden Enden der Hochspannungsdurchführung bezeichnet, das dazu eingerichtet ist, in einem Ölgefüllten Kessel einer Transformatorvorrichtung bzw. eines Transformators angeordnet zu werden. Geeigneterweise ist der Innenleiter am ölseitigen Ende der Hochspannungsdurchführung dazu eingerichtet, mit einer Wicklung des Transformators verbunden zu werden. Das freiluftseitige Ende der Hochspannungsdurchführung ist hingegen zweckmäßigerweise zum Verbinden mit einer Freileitung eingerichtet.In the case of a high-voltage bushing of this type, the object is achieved according to the invention in that the optical waveguide is led out of the high-voltage bushing at the oil-side end. The optical waveguide, by means of which a temperature of the high-voltage bushing can be measured, in particular an inner conductor temperature, is therefore not led out of the high-voltage bushing in the area of the fastening flange, but via the oil-side end of the high-voltage bushing. The oil-side end denotes that of the two ends of the high-voltage bushing which is set up to be arranged in an oil-filled tank of a transformer device or a transformer. The inner conductor at the oil-side end of the high-voltage bushing is suitably set up to be connected to a winding of the transformer. In contrast, the end of the high-voltage bushing on the open air side is expediently set up for connection to an overhead line.

Ein Vorteil der vorliegenden Erfindung ist es, dass ein Transformatoröl, das einen Raum zwischen dem ölseitigen Ende und einer Kesselwand des Transformators ausfüllt, eine gute Isolierung zwischen dem Hochspannungspotenzial des Innenleiters und dem Erdpotenzial der Kesselwand bereitstellt, so dass ein einfaches Verbinden des Lichtwellenleiters mit einer Auswerteeinheit zum Auswerten der mittels des Lichtwellenleiters ermittelten Sensordaten ermöglicht ist. Auf eine zusätzliche Durchführung zum isolierten Durchführen des Innenleiters aus der Durchführung kann verzichtet werden. In Fällen, in denen die Hochspannungsdurchführung einen Spannungsteileranschluss umfasst, der am Befestigungsflansch angeordnet ist, bietet die erfindungsgemäße Lösung eine Vereinfachung des Aufbaus, da am ölseitigen Ende in einem solchen Fall mehr Freiraum gegeben ist als in der räumlichen Nähe der elektrischen Anschlüsse des Spannungsteileranschlusses am Befestigungsflansch.An advantage of the present invention is that a transformer oil, which fills a space between the oil-side end and a tank wall of the transformer, provides good insulation between the high-voltage potential of the inner conductor and the ground potential of the tank wall, so that a simple connection of the optical waveguide with a Evaluation unit for evaluating the sensor data determined by means of the optical waveguide is enabled. There is no need for an additional lead-through for the insulated lead-through of the inner conductor from the lead-through. In cases where the high voltage bushing has a voltage divider connection which is arranged on the mounting flange, the solution according to the invention offers a simplification of the structure, since there is more free space at the oil-side end in such a case than in the spatial vicinity of the electrical connections of the voltage divider connection on the mounting flange.

Es ist im Rahmen der Erfindung selbstredend möglich, die Temperatur nicht lediglich an einer einzigen, sondern an mehreren Stellen der Hochspannungsdurchführung, z.B. ortsaufgelöst, zu erfassen.It is of course possible within the scope of the invention to reduce the temperature not only at a single but at several points of the high-voltage bushing, e.g. spatially resolved to capture.

Gemäß einer Ausführungsvariante der Erfindung ist der Lichtwellenleiter durch einen Hohlraum im Innenleiter geführt. Dies hat insbesondere Vorteile bei der Herstellung der Hochspannungsdurchführung, weil der Lichtwellenleiter auf einfache Weise durch den Innenleiter innen hindurchgeführt werden kann.According to one embodiment of the invention, the optical waveguide is guided through a cavity in the inner conductor. This has particular advantages in the production of the high-voltage bushing, because the optical waveguide can be passed through the inner conductor in a simple manner.

Gemäß einer weiteren Variante ist der Lichtwellenleiter zwischen dem Innenleiter und dem Isolierkörper geführt. Hier kann der Innenleiter beispielsweise durch einen Spalt zwischen dem Innenleiter und dem Isolierkörper geführt sein. Auch kann der Lichtwellenleiter durch einen dazu vorgesehenen Hohlraum im Innenleiter geführt sein. Es ist dabei selbstredend denkbar, dass der Lichtwellenleiter abschnittsweise durch den Hohlraum, zwischen dem Innenleiter und dem Isolierkörper und/oder auch innerhalb des Innenleiters geführt ist. Ist der Lichtwellenleiter zwischen dem Isolierkörper und dem Innenleiter geführt, so ist er vorteilhafterweise auf diese Weise bereits durch den Innenleiter und den Isolierkörper ohne zusätzliche Maßnahmen örtlich fixiert.According to a further variant, the optical waveguide is guided between the inner conductor and the insulating body. Here, the inner conductor can for example be passed through a gap between the inner conductor and the insulating body. The optical waveguide can also be guided through a cavity provided for this purpose in the inner conductor. It is of course conceivable that the optical waveguide is guided in sections through the cavity, between the inner conductor and the insulating body and / or also within the inner conductor. If the optical waveguide is guided between the insulating body and the inner conductor, it is advantageously already fixed locally in this way by the inner conductor and the insulating body without additional measures.

Vorzugsweise weist der Lichtwellenleiter an einem aus der Hochspannungsdurchführung herausgeführten Ende einen Stecker auf, der zum Verbinden mit einer Anschlussleitung eines Transformators oder einer Anschlusseinrichtung zur Weiterleitung von Temperaturmessdaten eingerichtet ist. Der Lichtwellenleiter kann entsprechend auf einfache Weise bei der Montage der Hochspannungsdurchführung mit der Anschlussleitung im Transformator oder der Anschlusseinrichtung verbunden werden, ohne weitere Montagemaßnahmen.The optical waveguide preferably has a plug at one end leading out of the high-voltage bushing, which is used to connect to a connection line of a transformer or a connection device for forwarding of temperature measurement data is set up. The optical waveguide can accordingly be connected in a simple manner to the connection line in the transformer or the connection device when the high-voltage bushing is installed, without any further installation measures.

Bevorzugt weist der Lichtwellenleiter an einem aus der Hochspannungsdurchführung herausgeführten Ende eine Überlänge auf. Die Überlänge kann vorteilhaft zu einer einfachen Verbindung des Lichtwellenleiters mit der Anschlussleitung bzw. der Anschlusseinrichtung genutzt werden. Die Überlänge, also die Länge des Lichtwellenleiters zwischen dem Ort der Herausführung aus der Hochspannungsdurchführung und dessen freien Ende, kann beispielsweise zwischen einem und zwei Metern betragen.The optical waveguide preferably has an excess length at one end that leads out of the high-voltage bushing. The excess length can advantageously be used for a simple connection of the optical waveguide to the connection line or the connection device. The excess length, that is to say the length of the optical waveguide between the point where it is led out of the high-voltage bushing and its free end, can for example be between one and two meters.

Gemäß einem Ausführungsbeispiel der Erfindung umfasst der Isolierkörper ein Aktivteil mit konzentrisch um den Innenleiter angeordneten elektrisch leitenden Steuereinlagen, die durch Isolierlagen voneinander getrennt sind. Die Isolierlagen können beispielsweise geeignetes Papier oder synthetisches Material umfassen, das mit einem Harz imprägniert ist. Die Steuereinlagen dienen zur Feldsteuerung und sind geeigneterweise konzentrisch um den Innenleiter angeordnet und durch die Isolierlagen voneinander beabstandet.According to an exemplary embodiment of the invention, the insulating body comprises an active part with electrically conductive control inserts which are arranged concentrically around the inner conductor and are separated from one another by insulating layers. The insulating layers can for example comprise suitable paper or synthetic material which is impregnated with a resin. The control inserts are used for field control and are suitably arranged concentrically around the inner conductor and spaced apart from one another by the insulating layers.

Gemäß einer weiteren Ausführungsform ist das Aktivteil von einer Nebenisolation zumindest teilweise umgeben, wobei die Nebenisolation gasförmig, pastös oder schaumförmig ist, wobei der Lichtwellenleiter zumindest abschnittsweise in der Nebenisolation geführt ist. Auf diese Weise ist auch dort Temperaturmessung am Innenleiter ermöglicht, wo der Innenleiter vom Aktivteil nicht mehr umgeben ist.According to a further embodiment, the active part is at least partially surrounded by a secondary insulation, the secondary insulation being gaseous, pasty or foam-like, the optical waveguide being guided at least in sections in the secondary insulation. In this way, temperature measurement on the inner conductor is also made possible where the inner conductor is no longer surrounded by the active part.

Die Erfindung betrifft ferner eine Transformatorvorrichtung mit einer Transformatorwicklung. Die Transformatorvorrichtung kann geeigneterweise mehrere Transformatorwicklungen umfassen, die im gleichen Transformatorkessel untergebracht sind.The invention also relates to a transformer device with a transformer winding. The transformer device may suitably comprise several transformer windings housed in the same transformer tank.

Die Erfindung hat die Aufgabe, eine solche Transformatorvorrichtung vorzuschlagen, die möglichst zuverlässig und kostengünstig ist.The invention has the task of proposing such a transformer device which is as reliable and inexpensive as possible.

Die Aufgabe wird bei einer artgemäßen Transformatorvorrichtung erfindungsgemäß dadurch gelöst, dass die Transformatorwicklung mittels einer erfindungsgemäßen Hochspannungsdurchführung mit einer Freiluftleitung verbindbar ist. Umfasst die Transformatorvorrichtung mehrere Transformatorwicklungen, so ist vorzugsweise jede Transformatorwicklung mittels einer zugeordneten erfindungsgemäßen Hochspannungsvorrichtung mit einer eigenen Freiluftleitung verbindbar.The object is achieved according to the invention in a transformer device of the type in question in that the transformer winding can be connected to an outdoor line by means of a high-voltage bushing according to the invention. If the transformer device comprises several transformer windings, then each transformer winding can preferably be connected to its own outdoor line by means of an associated high-voltage device according to the invention.

Die Vorteile der erfindungsgemäßen Transformatorvorrichtung ergeben sich insbesondere aus den bereits beschriebenen Vorteilen der erfindungsgemäßen Hochspannungsdurchführung.The advantages of the transformer device according to the invention result in particular from the advantages of the high-voltage bushing according to the invention already described.

Gemäß einer Ausführungsform der Erfindung umfasst die Transformatorvorrichtung eine Sensorvorrichtung, die an einer Transformatorkesselwand angeordnet ist und mit dem Lichtwellenleiter verbunden ist. Geeigneterweise ist die Sensorvorrichtung mit einer Anschlusseinrichtung ausgestattet und dazu eingerichtet, die Lichtsignale aus dem Lichtwellenleiter zu empfangen und an eine Auswerteeinheit weiterzuleiten. Die Weiterleitung kann kabelgebunden oder kabellos erfolgen, je nach Ausgestaltung der Sensorvorrichtung.According to one embodiment of the invention, the transformer device comprises a sensor device which is arranged on a transformer tank wall and is connected to the optical waveguide. The sensor device is suitably equipped with a connection device and set up to receive the light signals from the optical waveguide and to forward them to an evaluation unit. The forwarding can be wired or wireless, depending on the configuration of the sensor device.

Gemäß einer Ausführungsvariante ist die Sensorvorrichtung zur Temperaturmessung bzw. Temperaturerfassung mittels des Lichtwellenleiters eingerichtet. Hierbei kann die Sensorvorrichtung die Lichtsignale zum Einspeisen in den Lichtwellenleiter selbst erzeugen. Geeigneterweise ist die Sensorvorrichtung dazu eingerichtet die empfangenen Lichtsignale in elektrische Signale umzuwandeln und gegebenenfalls auszuwerten und/oder an eine weitere Empfangseinrichtung weiterzuleiten oder zu senden.According to one embodiment variant, the sensor device is set up for temperature measurement or temperature detection by means of the optical waveguide. Here, the sensor device can itself generate the light signals for feeding into the optical waveguide. The sensor device is suitably set up to convert the received light signals into electrical signals and, if necessary, to evaluate and / or forward or send to another receiving device.

Die Erfindung wird im Folgenden anhand der in den Figuren 1 und 2 dargestellten Ausführungsbeispiele weiter erläutert.

  • Figur 1 zeigt ein erstes Ausführungsbeispiel der erfindungsgemäßen Hochspannungsdurchführung in einer schematischen Darstellung;
  • Figur 2 zeigt ein zweites Ausführungsbeispiel der erfindungsgemäßen Hochspannungsdurchführung in einer schematischen Darstellung.
The invention is described below with reference to the in FIGS Figures 1 and 2 illustrated embodiments further explained.
  • Figure 1 shows a first embodiment of the high-voltage bushing according to the invention in a schematic representation;
  • Figure 2 shows a second embodiment of the high-voltage bushing according to the invention in a schematic representation.

In Figur 1 ist eine Hochspannungsdurchführung 1 dargestellt. Die Hochspannungsdurchführung 1 weist einen Innenleiter 2, der sich zwischen einem freiluftseitigen Ende 3 und einem ölseitigen Ende 4 der Hochspannungsdurchführung 1 erstreckt. Das ölseitige Ende der Hochspannungsdurchführung 1 steckt in einem mit einem Isolieröl gefüllten Ölkessel 5 einer Transformatorvorrichtung 17 mit einer Kesselwand 6. Die Hochspannungsdurchführung 1 umfasst ferner einen Isolierkörper 7, durch den der Innenleiter 2 hindurchgeführt ist. Der Isolierkörper 7 umfasst ein Aktivteil 8 mit konzentrischen Steuereinlagen, eine gasgefüllte Nebenisolation 9, ein Gehäuse 10 sowie Isolatorschirme 11 und einen Befestigungsflansch 12 zur Befestigung der Hochspannungsdurchführung 1 an der Kesselwand 6. Im Befestigungsflansch 12 befindet sich ein Spannungsteilerabgriff 13 zur Spannungsmessung bzw. Kapazitätsmessung.In Figure 1 a high-voltage bushing 1 is shown. The high-voltage bushing 1 has an inner conductor 2 which extends between an open-air end 3 and an oil-side end 4 of the high-voltage bushing 1. The oil-side end of the high-voltage bushing 1 is located in an oil tank 5 of a transformer device 17 with a tank wall 6, which is filled with an insulating oil. The high-voltage bushing 1 also comprises an insulating body 7 through which the inner conductor 2 is passed. The insulating body 7 comprises an active part 8 with concentric control inserts, a gas-filled secondary insulation 9, a housing 10 as well as insulator screens 11 and a fastening flange 12 for fastening the high-voltage bushing 1 to the boiler wall 6. In the fastening flange 12 there is a voltage divider tap 13 for voltage measurement or capacitance measurement.

Ein Lichtwellenleiter 14 ist in einem Hohlraum des Innenleiters 2 geführt und am ölseitigen Ende 4 aus der Hochspannungsdurchführung 1 herausgeführt. Der Lichtwellenleiter 14 weist eine Überlänge 15 auf, so dass der Lichtwellenleiter 14 mit einer Anschlusseinrichtung 16 der Transformatorvorrichtung 17 verbindbar ist, die eine geeignete Sensorvorrichtung sein kann. Dazu ist der Lichtwellenleiter 14 mit einem geeigneten Stecker 18 ausgestattet.An optical waveguide 14 is guided in a cavity of the inner conductor 2 and is led out of the high-voltage bushing 1 at the oil-side end 4. The optical waveguide 14 has an excess length 15 so that the optical waveguide 14 can be connected to a connection device 16 of the transformer device 17, which is a suitable sensor device can be. For this purpose, the optical waveguide 14 is equipped with a suitable plug 18.

In Figur 2 ist eine Hochspannungsdurchführung 18 dargestellt, wobei gleiche und gleichartige Bauteile und Elemente der Hochspannungsdurchführungen 1 bzw. 18 der Figuren 1 und 2 mit jeweils gleichen Bezugszeichen versehen sind. Um Wiederholungen zu vermeiden wird daher bei der Beschreibung der Figur 2 lediglich auf die Unterschiede der beiden Ausführungsbeispiele eingegangen.In Figure 2 a high-voltage bushing 18 is shown, with identical and similar components and elements of the high-voltage bushings 1 and 18 of the Figures 1 and 2 are provided with the same reference numerals. In order to avoid repetition, the Figure 2 only dealt with the differences between the two exemplary embodiments.

Im Gegensatz zu der Hochspannungsdurchführung 1 der Figur 1 weist die Hochspannungsdurchführung 18 einen schmalen Spalt 19 zwischen dem Aktivteil 8 und dem Innenleiter 2. Durch diesen Spalt 19 ist der Lichtwellenleiter 14 am Innenleiter 2 geführt und aus der Hochspannungsdurchführung 1 an ihrem ölseitigen Ende 4 herausgeführt.In contrast to the high-voltage bushing 1 of the Figure 1 the high-voltage bushing 18 has a narrow gap 19 between the active part 8 and the inner conductor 2. The optical waveguide 14 is guided through this gap 19 on the inner conductor 2 and is led out of the high-voltage bushing 1 at its oil-side end 4.

Claims (10)

Hochspannungsdurchführung (1,18) mit einem durch einen Isolierkörper (7) hindurchgeführten Innenleiter (2), der sich zwischen einem freiluftseitigen Ende (3) und einem ölseitigen Ende (4) der Hochspannungsdurchführung erstreckt, sowie mit einem Lichtwellenleiter (14) zum Messen wenigstens einer Temperatur der Hochspannungsdurchführung,
dadurch gekenzeichnet, dass
der Lichtwellenleiter (14) am ölseitigen Ende (4) aus der Hochspannungsdurchführung herausgeführt ist.High-voltage bushing (1,18) with an inner conductor (2) passed through an insulating body (7), which extends between an open-air end (3) and an oil-side end (4) of the high-voltage bushing, and with an optical waveguide (14) for measuring at least a temperature of the high-voltage bushing,
characterized in that
the optical waveguide (14) is led out of the high-voltage bushing at the oil-side end (4). Hochspannungsdurchführung (1) nach Anspruch 1, wobei der Lichtwellenleiter (14) durch einen Hohlraum im Innenleiter geführt ist.High-voltage bushing (1) according to Claim 1, the optical waveguide (14) being guided through a cavity in the inner conductor. Hochspannungsdurchführung (18) nach Anspruch 1 oder 2, wobei der Lichtwellenleiter (14) zwischen dem Innenleiter (2) und dem Isolierkörper (7) geführt ist.High-voltage bushing (18) according to Claim 1 or 2, the optical waveguide (14) being guided between the inner conductor (2) and the insulating body (7). Hochspannungsdurchführung (18) nach einem der vorangehenden Ansprüche, wobei der Lichtwellenleiter (14) an einem aus der Hochspannungsdurchführung herausgeführten Ende einen Stecker (20) aufweist, der zum Verbinden mit einer Anschlussleitung eines Transformators oder einer Anschlusseinrichtung zur Weiterleitung von Temperaturmessdaten eingerichtet ist.High-voltage bushing (18) according to one of the preceding claims, wherein the optical waveguide (14) has a plug (20) at one end leading out of the high-voltage bushing, which is designed to connect to a connection line of a transformer or a connection device for forwarding temperature measurement data. Hochspannungsdurchführung (1,18) nach einem der vorangehenden Ansprüche, wobei der Lichtwellenleiter (14) an einem aus der Hochspannungsdurchführung herausgeführten Ende eine Überlänge (15) aufweist.High-voltage bushing (1,18) according to one of the preceding claims, wherein the optical waveguide (14) has an excess length (15) at an end leading out of the high-voltage bushing. Hochspannungsdurchführung (1,18) nach einem der vorangehenden Ansprüche, wobei der Isolierkörper (7) ein Aktivteil (8) mit konzentrisch um den Innenleiter angeordneten elektrisch leitenden Steuereinlagen umfasst, die durch Isolierlagen voneinander getrennt sind.High-voltage bushing (1, 18) according to one of the preceding claims, wherein the insulating body (7) has an active part (8) arranged concentrically around the inner conductor comprises electrically conductive control inserts which are separated from one another by insulating layers. Hochspannungsdurchführung (1,18) nach Anspruch 6, wobei das Aktivteil (8) von einer Nebenisolation (9) zumindest teilweise umgeben ist, wobei die Nebenisolation (9) gasförmig, pastös oder schaumförmig ist und der Lichtwellenleiter (14) zumindest abschnittsweise in der Nebenisolation (9) geführt ist.High-voltage bushing (1,18) according to claim 6, wherein the active part (8) is at least partially surrounded by a secondary insulation (9), the secondary insulation (9) being gaseous, pasty or foam-shaped and the optical waveguide (14) at least partially in the secondary insulation (9) is performed. Transformatorvorrichtung (17) mit einer Transformatorwicklung,
dadurch gekenzeichnet, dass
die Transformatorwicklung mittels einer Hochspannungsdurchführung (1,18) nach einem der Ansprüche 1 bis 7 mit einer Freiluftleitung verbindbar ist.Transformer device (17) with a transformer winding,
characterized in that
the transformer winding can be connected to an open-air line by means of a high-voltage bushing (1,18) according to one of claims 1 to 7. Transformatorvorrichtung (17) nach Anspruch 8, wobei die Transformatorvorrichtung wobei die Transformatorvorrichtung eine Sensorvorrichtung (16) umfasst, die an einer Transformatorkesselwand (6) angeordnet ist und mit dem Lichtwellenleiter (14) verbunden ist.Transformer device (17) according to claim 8, wherein the transformer device, wherein the transformer device comprises a sensor device (16) which is arranged on a transformer tank wall (6) and is connected to the optical waveguide (14). Transformatorvorrichtung (17) nach einem der Ansprüche 8 oder 9, wobei die Sensorvorrichtung (16) zur Temperaturmessung mittels des Lichtwellenleiters (14) eingerichtet ist.Transformer device (17) according to one of Claims 8 or 9, the sensor device (16) being set up for temperature measurement by means of the optical waveguide (14).
EP19160763.9A 2019-03-05 2019-03-05 High voltage feed-through with temperature detection and transformer device with the high voltage feed-through Active EP3706145B1 (en)

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DK19160763.9T DK3706145T3 (en) 2019-03-05 2019-03-05 High voltage bushing with temperature detection and transformer arrangement with the high voltage bushing
EP19160763.9A EP3706145B1 (en) 2019-03-05 2019-03-05 High voltage feed-through with temperature detection and transformer device with the high voltage feed-through

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999317U (en) * 1982-12-23 1984-07-05 日立電線株式会社 Capacitor type bushing
JPH04296409A (en) * 1991-03-25 1992-10-20 Ngk Insulators Ltd Optical fiber built-in bushing
WO2017152985A1 (en) 2016-03-10 2017-09-14 Siemens Aktiengesellschaft High-voltage device featuring temperature measurement, and method for measuring the temperature of a high-voltage device
EP3428934A1 (en) * 2017-07-10 2019-01-16 ABB Schweiz AG High voltage bushing with temperature sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999317U (en) * 1982-12-23 1984-07-05 日立電線株式会社 Capacitor type bushing
JPH04296409A (en) * 1991-03-25 1992-10-20 Ngk Insulators Ltd Optical fiber built-in bushing
WO2017152985A1 (en) 2016-03-10 2017-09-14 Siemens Aktiengesellschaft High-voltage device featuring temperature measurement, and method for measuring the temperature of a high-voltage device
EP3428934A1 (en) * 2017-07-10 2019-01-16 ABB Schweiz AG High voltage bushing with temperature sensor

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